Operational Efficienty of Plantation Tending in Taiwan : Case Studies Carried out in Three Coniferous Plantations

• Main Authors: Tang, Shyh-Chian, 湯適謙
• Other Authors: Shuen Chao Wu
• Format: Others
• Language: zh-TW
• Published: 1997
• Online Access: http://ndltd.ncl.edu.tw/handle/81390685038368974160

博士 === 國立臺灣大學 === 森林學系 === 85 === Summary The weight of plantations were gained more in Taiwan forests. The thinning and pruning operations are both very important tending measures. A rating standard should be established to maintain reasonable operational efficiency. And advanced study should be undertaken to take new ways or tools to compare different kind of operational efficiency. This study was undertaken in the following forests: Chilan Mountain( belonging to Forest Development Administration),Feng-gang Mountain(belonging to Taiwan Forest research Institute), Chi-ton tract(belongs to National Taiwan University Experiment Forest).The purpose of this study was to investigate operational efficiency of row thinning and pruning carried out in the above three forests. The summary of obtained results is as follows: 1.The relationship between the felling and bucking time for each tree and the width of thinned zones was negative related at 1% significant level. That is to say the operational efficiency could be lifted while increasing the width of thinned zones. 2.The average operational efficiency was 9.50,11.21,12.43 and 13.28 m3/day for the width of 8m,10m,12m and 14m thinned zones separately. The efficiency was improved 40% while comparing 14m of thinned zones with 12m. 3.The index analysis table could be made according land condition ,transporting time, rainy days per month, average tree volume. 4. The standard output for felling and bucking could be got from the index analysis method or standard time method. The standard output was increasing with the width of thinned zones. 5. The average operational efficiency for logging was 10.60m3,and therewas no obvious tendency between different thinned zones. By advanced analysis, the operational efficiency would be influenced by the time of arranging thinned zones. While deducting the time, the efficiency had the tendency to increase with the width of thinned zones. 6.The time of arranging thinned zones was increased with the row numbers.But the time o row numbers. 7.The index for logging could be calculated according to the factors which influenced the logging time, and the standard output could be got by advanced calculation. On the other hand, the 「standard time method」 could be applied to get standard output. 8. The standard output for landing could also be got by 「Standard time method」. 9. The standard output for pruning could also be got by 「Standard time method 」, and the standard output was 119 trees/day for long hand saw, 39 trees/day for machine, 43 trees/day for saw and ladder, 122 trees/day for hand sickle. 10.The relationship between operational efficiency and allowance rate was related at 1% significant level. 11.The physiological load could be calculated from heart rate recorder while doing forest operations. 12.When the forest operators used the same tool to work, the difference between R.M.R. was more little. 13.The relationship between operational efficiency and R.M.R. for pruning was related at 5% significant level. Because the forest workers for this study had years of experience for forest operations, so the operational efficiency and physiological load could be the collated data for related works.